authority: 49 U.S.C. 113,
504,
508,
31132,
31133,
31134,
31136,
31137,
31144,
31149,
31151,
31502; sec. 114, Pub. L. 103-311, 108 Stat. 1673, 1677; secs. 212 and 217, Pub. L. 106-159, 113 Stat. 1748, 1766, 1767; sec. 229, Pub. L. 106-159 (as added and transferred by sec. 4115 and amended by secs. 4130-4132, Pub. L. 109-59, 119 Stat. 1144, 1726, 1743, 1744), 113 Stat. 1748, 1773; sec. 4136, Pub. L. 109-59, 119 Stat. 1144, 1745; secs. 32101(d) and 32934, Pub. L. 112-141, 126 Stat. 405, 778, 830; sec. 2, Pub. L. 113-125, 128 Stat. 1388; secs. 5403, 5518, and 5524, Pub. L. 114-94, 129 Stat. 1312, 1548, 1558, 1560; sec. 2, Pub. L. 115-105, 131 Stat. 2263; and
49 CFR 1.81, 1.81a, 1.87